Synthesis of Polysubstituted Pyrazoles by a Platinum-Catalyzed Sigmatropic Rearrangement/Cyclization Cascade
作者:Jia-Jie Wen、Hai-Tao Tang、Kai Xiong、Zong-Cang Ding、Zhuang-Ping Zhan
DOI:10.1021/ol502968c
日期:2014.11.21
A highly efficient Pt-catalyzed [3,3] sigmatropic rearrangement/cyclization cascade of N-propargylhydrazones is reported. The process provides expedient access to a variety of highly functionalized pyrazoles. The substrate has good substituted group compatibility, and the bioactive 3-CF3 pyrazoles could be synthesized easily with this method.
报道了N-炔丙基hydr的高效Pt催化的[3,3]σ重排/环化级联反应。该方法可方便地获得各种高度官能化的吡唑。该底物具有良好的取代基相容性,并且该方法可以容易地合成生物活性3-CF 3吡唑。